Looping attachment for sewing-machines



(No Model.)

A. M. PERKINS. LOOPING ATTACHMENT FOR SEWING MACHINES.

No. 390,896. Patented 001;. 9, 1888 M. H 0 a (fi 208722 07 m, %-w 9%, fibaw.

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UNITED STATES PATENT OFFICE.

ALICE M. PERKINS, OF LA GROSSE, \VISCONSIN.

LOOPING ATTACHMENT FOR SEWING -MACHINES.

EPECIFICATION forming part of Letters Patent No. 390.896, dated October 9, 1888.

Application filed March 30, 1888. Serial No.2fl8.958. (X0 model.)

To ally/7mm, it may concern:

Be it known that I, ALICE M. PERKINS, a citizen of the United States, residing at La Grosse, in the county of La Crosse and State of Wisconsin, have invented certain new and useful Improvements in Looping and Tufting Attachments for Sewing-IVIzichines; and Ido hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to an attachment for sewingmachines, for making looping, tufting, or fringing; and it consists in the novel construction and combination of the parts, hereinafter fully described and claimed.

In the drawings, Figure 1 is a plan view of v the attachment from above, showing the loop ing-hook advanced. Fig. 2 is a similar view showing the looping-hook drawn back. Fig. 3 is a front view of the attachment. Fig. 4 is a longitudinal section taken on line 4 4 in Fig. 1.

A is the foundation-plate of the attachment,

provided with the socket a and screw a, by-

means of which it may be secured to the sewing-machine in place of the presser-foot commonly employed.

B is a bracket, which projects upwardly from plate A, and O is a lever pivoted upon the pin 1), which is screwed into the top of bracket 13. The lever O is provided with a vertical slot, 0, and with a horizontal arm, D, having the slots (2 and d formed through it.

E is the ordinary needlc-barof the sewingmachine, and c is a pin which projects from the needlebar and engages with the slot (1 in thehorizontal arm, so that the lever O is caused to vibrate upon its pivot-pin I).

F is a plate having a projection, F, on its upper side, which is provided with the pin f, engaging with the said slot 0.

G is a guide-groove for the loopinghook formed in plate A, and g indicates projecting lips, which prevent plate F from rising.

H is the looping hook, which is secured to plate F, and which receives a continuous reciprocating movement from the lever O and the needle-bar.

I is a bracket, also projecting upwardly from plate A, and J is a vertical lever pivoted to the top of bracket I by the pin t, and provided with the horizontal curved arm 7', the end of which projects through the slot (1 in the horizontal arm of lever O.

K is a plate having the loop-feeding arm M secured to its under side, and 75' are lugs upon the upper side of plate K, with which the rocking lever J may engage at the ends of its stroke. A slot, L, is formed in plate A for the arm M to slide in, and Z is a plate secured to bracket I for preventing the plate K from rising. The loop-feeding arm M is provided with an extension, or, which presses on the yarn while being drawn back by the looping-hook and prevents it from becoming entangled.

N is a bifurcated loop-holding arm secured to plate K on the opposite side of bracket I from the loop-feeding arm M, and a is a screw which passes through the fork a on the end of arm N and holds it adjustably secured to plate K.

O is a spring provided with a projection, c, which works in a diagonal slot in plate A, and 0 is a screw for regulating the pressure of the spring. This constitutes a tension device for the yarn.

The operation of the attachment is as fol lows: The yarn is passed through the diagonal slot under the projection 0 of the spring, and is seized by the looping-hook, which is thrust forward by the upward movement of the needle-bar into the position shown in Figs. 1 and 4-. The descent of the needle-bar draws back the hook-forming loop, as shown in Fig. 2. The machine-needle passes through the head of this loop with the descent of the needlebar and sews it in the usual manner onto a backing of any woven material; or the backing may be dispensed with and the loops of yarn merely sewed together. The needle-bar then rises and the looping-hook is again pushed forward.

The loop feeding and holding arms are pushed forward by their actuating-levers when the needle-bar has moved about one-half of its upward stroke, and said arms are drawn back during the second half of the downward stroke of the bar, thereby pushing each loop forward as soon as it is disengaged by the needle in its upward stroke and moving out of the way of the yarn when it is being drawn back by the loopinghook during the downstroke of the said needlebar.

\Vhat I claim is- 1. In a looping attachment for a sewingmachine, the combination, with the loop-holding arm arranged substantially in line with the sewing-machine needle, of the loop-feeding arm arranged parallel with the said loop-holding arm, the looping-hook arranged ata right angle to the said holding and feeding arms, and lever mechanism actuated by the needle bar for reciprocating the said arms and hook, substantially as and for the purpose set forth.

2. In a looping attachment for a sewing machine, the combination, with the bifurcated loop-holding arm arranged in line with the sewing-machine needle, of the loop-feeding arm arranged parallel with the said loop holding arm, the looping-hook arranged at a right angle to the holding and feeding arms, a vibrating lever operated by the needlebar for reciprocating the looping-hook and the said holding and feeding arms, and intermediate lever mechanism interposed between the said lever and the loop holding and feeding arms, whereby the said arms are reciproeated intermittently, substantially as and for the purpose set forth.

3. The combination, with the foundation plate for attachment to the presser-bar of a sewing-machine, and provided with the brackets B and I, of the vibrating lever provided with the vertical slot 0 and horizontal slots at and d, the looping-hook having apin secured thereto engaging with the slot 0, the loopfeeding arm arranged ata right angle to the said hook, and intermediate lever mechanism for intermittently reciprocating theloop-feeding arm and engaging with the said slot (1, substantially as and for the purpose set forth.

4-. The combination, with the foundationplate provided with brackets B and I, of the looping-hook, the vibrating lever pivoted to bracket B, for reciprocating the hook, the sliding plate K, the loop-feeding and loopholding arms and the lugs secured to the said plate, the lever pivoted to bracket I and provided with a horizontal arm engaging with a slot in the aforesaid lever, and with a verti cal arm engaging the said lugs, whereby an intermittent motion may be imparted to the 5 loop feeding and holding arms, substantially as and for the purpose set forth.

5. In a looping attachment for a sewingmachine, the combination, with the continuously-reciprocating loopinghook, of the intermittentlyreciprocating loop holding and feeding arms arranged parallel with each other and at a right angle to the hook, and the adjustable spring provided with a projection upon its under side and bearing upon the yarn in front of theloop-holding arm, substantially as and for the purpose set forth.

6. The combination, with the foundationplate provided with brackets B and I, of the lever pivoted to bracket B and provided with slots 0, d, and d, the sliding plate provided with a projection, and the pin fiengaging with slot 0, the lips for retaining the plate, the looping-hook secured to the plate and guided in a groove in the foundation-plate, the loop- 7 feeding arm arranged at a right angle to the looping-l1ook,and intermediate lever mechanism for intermittently reciprocating the loopfeeding arm and engaging with the said slotd, substantially as and for the purpose set forth.

7. The combination, with the foundationplate provided with brackets B and I, of the lever pivoted to bracket I and provided with the horizontal armj,the plate K,provided with lugs It, with which the said lever may engage 8 intermittently, the loop feeding and holding 3 arms M and N,secured to plate K, the plate Z, for keeping the feed-arm M in its guide-groove, the looping-hook at right angles to the feedarms, and the lever pivoted to bracket B and operat-ively connected to the looping-hook and to the said horizontal arm j, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ALICE M. PERKINS.

\Vitnesscs:

M. P. WING, G. E. Snuvis. 

